基于双链路全桥的升降压逆变器研究  

Research of Buck-Boost Inverter Based on Dual Link-path Full-bridge

作　　者：李亚飞 钱科军 朱庆[2,3] 韩克勤 LI Ya-fei;QIANKe-jun;ZHU Qing;HANKe-qin(Suzhou Power Company of State Grid Jiangsu Electric Power Co.,Ltd.,Suzhou 215004,China;不详)

机构地区：[1]国网江苏省电力有限公司苏州供电公司,江苏苏州215004 [2]国电南瑞科技股份有限公司,江苏南京211106 [3]国电南瑞南京控制系统有限公司,江苏南京211106

出　　处：《电力电子技术》2023年第7期12-16,共5页Power Electronics

基　　金：国家重点研发计划科技助力经济2020专项(SQ2020YFF0426410)。

摘　　要：提出一种基于全桥的单级非隔离升降压逆变器,存在两条连接桥臂中点的链路。其中一条链路放置能量传输电感,另一条链路放置双向开关和负载。首先分析了该升降压逆变器拓扑的由来及电路特征。然后,描述其工作模态并推导其电压增益、器件应力等稳态特性。进一步从效率和可靠性两个角度展开讨论,探寻合适的正弦脉宽调制(SPWM)策略。使用PSIM软件搭建电路模型并给出相关仿真结果。制作一台峰值效率为96.3%、功率为500W的硬件样机并给出部分量测波形。实验表明该升降压逆变器具有效率较高和结构较为简单的特点。A single-stage non-isolated Buck-Boost inverter based on full-bridge is proposed,featuring dual link-path connecting the middle point of each phase leg.There is energy transfer inductor in one link-path,while bidirectional switch and load in the other.Derivation of the Buck-Boost inverter topology and circuit characteristics are analyzed firstly.Then,operation modes are described and steady-state performance including voltage gain,component stress are also deduced.Further discussion of efficiency and reliability properties are carried out in order to seek appropriate si-nusoidal pulse width modulation(SPWM)strategy.Software PSIM is employed to establish circuit model and related si-mulation results are given.Meanwhile,a 500 W hardware prototype with 96.3%peak efficiency is fabricated and part of measurement waveforms are provided.The experimental results demonstrate that the proposed Buck-Boost inverter features relatively high efficiency and relatively simple structure.

关 键 词：逆变器 单级非隔离 双链路全桥 可靠性 

分 类 号：TM464[电气工程—电器]